When changing large amount of money it can make a big difference how much do you get, so it is better to compare different exchange offices.

Comparison can be seen in these two places:

https://www.bestforeignexchange.com

http://travelmoney.moneysavingexpert.com/

Money from one country to another can be sent through various banks. They usually take a lot of commissions. You need to be careful what exchange rate they have.

Considered by the majority, , it is best to create an account on transferwise, and through them to transfer monies to other countries.

if you want first transaction for free, up to £1000 click on link below.